Putlog



Dec. 30, 1930. T. H. KINGSTON 1,787,005.

PUTLOG Filed March 5, 1929 Patented Dec. 30, 1930 THOMAS HAVELOCK KINGSTON, OF WEST SOMERVILLE, MASSACHUSETTS, ASSIGNORTO BUILDER S PATENT SCAFFOLIJING flOMPANY, A PARTNERSHIP GOJl/IIEOSED'01 FRANK G. KINGSTON, A. R. 'KINGSTFON,

WEST soMEnvizLLn, MASSACHUSETTS C. C. PIMM, AND MABEL G. KITCI-IEN, OF

PUTLOG Ap l cation filed March 5,1929. Serial no. 344,503,

My invention relates to scaffolding 'or staging for 'Workmen engaged in erecting brick and. inasonry' walls and in particular to the horizontal supports known as putlogs which have devices at one end'for detachable connection with the wall being'erected,

. and at the other end rests upon horizontal supports that are secured to the vertical poles or directly to the poles. These put-logs consist of two parts ormembers, one that ineludes a comparatively thin blade-like metal member that extends horizontally through a joint between adjacent bricks or stonesand has a bearing upon the top of the under brick .or stone, and the othera bar made usually most readily and conveniently ofwood. An

acceptable putlog nust combine the properties of 'efiicient anchorage or bearing connection with the wall, facility of application to and removal from the wall and that without damage to the latter on the front or exposed face, adequate strength because human life and limb are concerned, the minimum of cost, and such connection between the wall engaging member and the other member that they maybe readily assembled for use even by unskilled labor so that the complete putlog need not be put up at and sent out from the fac tory, but may be provided at some remote place from the factory and thus cost of shipment or transportation be greatly reduced as I by the shipment of the wall-engaging member alone. I havehad in view all of the considerations just mentioned in producing my invention and in what I regard as its best and most satisfactory form all of thernare embodied therein, but it is to be understood that forms or embodiments of my invention may be employed in which less than all of the qualities or properties just mentioned will be found. j My invention consists in whatever is described by or is included within the terms or scope of the appended claims.

In the drawings Fig. 1 is a perspective view of a putlog embodying my inve'ntion,which requires no Wood bar;

Fig. 2 is a similar view of another embodiment of my invention adapted for use with a bar orbody of wood;

Fig. 3 is a perspective View of yet another embodiment of my invention for use with a bar or body of iron tubing or pipe.

I Describing briefly a putlog embodying my invention, it includes the two essential parts a comparatively thinbar which-inuse is thrust in the joint or space between adjacent bricks provided by omitting mortar between the bricks for the purpose, and the body member which extendsoutward from the wall and 'constitutes the horizontal support for the planking that forms the platiorintorthe-workmen and which at the outer end rests upon or is supported by the hori- T zo'ntalledgcr board. I 1

Describing in detail what-is shown in the drawings, the anchoring or wall-engaging member is a flat metal bar that is blade-like which has a bearing portion, 10,015 sufficient length to extend between ad acent bricks of a course, so that a downwardly extending hoolqll, at the free end may catch overthe upper rear corner of the underlying brick.

As shown in Fig. 1, this brick-engagingip'ortion, 1O, is the continuation in a straight line of a thin metalbar, 12, of sufficlent length to reach tot-he ledger boards and together with an angle bar, 13', riveted to each side and of the same length constitutes the putlog'hody, Y the angles,}13, being bothreinforcing mm- V bers and by'having the horizontal flange uppermost providing a wide bearing or'support for platform planks laid thereon.

In the event that additional st'rengthimay be required I providealoop or stirrup, l4,

*nearor at each end of the angles" 13, and proijecting'from the uppeivside thereof for the detachable connection ofa Wood log or body, 15, shown. in dotted lines in Fig. 1.- The end location of the loops or "stirrups, -14, obviously hinders inno way" the use of-the jputlog without the wood body, l5,'because the planks forming the scaifolding platform as maybe laid on .thetops of the bar, 12, and

angles, 18, in thespacebetween theloops, 14;.

The loops or'stirrups, 14, may ieachrbe 7 an inverted 'vJ -shape strap -with' its." legs joined at the bottom a crossbar, 16, whose 100 ends project through holes in the legs and are offset or riveted thereto and through 'which strap, 16, rivets, 17 pass through the that shown in"Fig.1 1' with the exception that the bar, 12, and angles, '13, are not; ex-

tended toform the ,putlog body, but they.

are made only longjenough for the attachment thereto of two loops, 14, corresponding to the loops, 14. of Fig. 1 for the reception ymember'of metal anda body. comprising of the end portion of ajwood body 15, it

being possible in this case to use only a wood body as theplatform planks support.

The form of my invention shown in Fig. 3 is the same inall essential respects as that shown in Fig: 2,,including the clincher member, 10, withthe hook,11, the short angles 13, rivetedto a short extension or shank of the clincher member and two loops, 140, but the loops, 1 4l0 instead of being rectangular or flatsided are substantiallysemi-circular, so thatthey may readily receive the end portion of a. piece of round pipe or tubing that serves as the body'member to receive and support the scaffolding platform.

Means may be provided to prevent the ac cidental separatio'n'of the pipe or tube when used with-the stirrups or loops of the construction shown in Fig. 3. Such means may be a pin or .bolt, 18, that passes through alining holesin the side legs of one of the loops and through'a registering hole extending diametrically through the inserted portion of the pipe or tube. Such an attaching means is readily applied, is certain in its action and may be readily removed for tak-V ing a putlog apart. a Y v Of course, the greatstresses which putlogs are subjected to are bending and shearing stresses, audit will, therefore, be evident that with the angles riveted with their side flanges to the interposed'baror plate, grea resistance to such stresses is afiorded. What I clalm 1s:

body and the projecting portion constituting a member insertable in a space between adjacent bricks of-the wall.

6. putlog comprising a body member of a length toreach from a wall to a pole-supported ledger board and a thin metal bar with. vertical sides situated at the bottom and extending parallel with the body, said thin metal bar projectingatthe wall end of the body and the projecting portion constituting a member insertable in a space between adjacent bricks of the wall, the remaind er of said thin'metal bar fitting ,between and engaged on opposite sides by longitudinally extending portions of the body at the bottom thereof, fastening means passing horizontally'through said metal bar and the body portions embracing the same at the sides and ,a stirrup with vertical and horizontal. portions that overlie and engage adjacent'sides :of the body at the end from which the wall-engaging portion of said thin metal bar projects.

In testimony whereof I hereunto aflix'm'y signature. 7

THOMAS HAVELOCK KINGSTON.

.1.-A putlog comprising a. Wallengaging member of metaland a body-comprising angles secured to opposite sides thereof'with horizontalflanges'at the topthat provide a extended staging-supporting surfaces '2. A'putlog comprising awall-engaging angles secured to opposite sidesthereof with I V stirrups securedupon saidzhorizon'tal flanges.

horizontal flanges atv the. 'toplthat provide 'i putlog comprising a wall-engaging member of metal and angles secured to .op-

posite sides thereof with horizontal ,flanges i at the top, and a stirrup or stirrups having a cross bar resting on the 'flangesand secured 1 to the flanges.

LA putlog comprising a wall-engaging 5 member of metal with flat vertical sides,

izo 

